64cf50e2eb
graphics/twm4nx/src/window.cxx: Add flags to CWindow initializer to support customization of toolbar buttons and other window properties. Add framework to handle toolbar button presses. Window minimization (aka, iconification) does not work. graphics/twm4nx/src/input.cxx: Add support to scaling touchscreen. Not needed for the current testing because the touchscreen naturally matches the display size. But will be needed, along with calibration scren, in the future.
223 lines
8.1 KiB
C++
223 lines
8.1 KiB
C++
/****************************************************************************
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* apps/include/graphics/nxwm/ctouchscreen.hxx
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*
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* Copyright (C) 2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX, NxWidgets, nor the names of its contributors
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* me be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __APPS_INCLUDE_GRAPHICS_NXWM_CTOUCHSCREEN_HXX
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#define __APPS_INCLUDE_GRAPHICS_NXWM_CTOUCHSCREEN_HXX
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/nx/nxglib.h>
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#include <semaphore.h>
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#include <pthread.h>
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#include <nuttx/input/touchscreen.h>
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#include "graphics/nxwidgets/cnxserver.hxx"
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#include "graphics/nxwm/ccalibration.hxx"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Implementation Classes
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****************************************************************************/
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namespace NxWM
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{
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/**
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* The CTouchscreen class provides the the calibration window and obtains
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* callibration data.
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*/
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class CTouchscreen
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{
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private:
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/**
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* The state of the listener thread.
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*/
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enum EListenerState
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{
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LISTENER_NOTRUNNING = 0, /**< The listener thread has not yet been started */
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LISTENER_STARTED, /**< The listener thread has been started, but is not yet running */
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LISTENER_RUNNING, /**< The listener thread is running normally */
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LISTENER_STOPREQUESTED, /**< The listener thread has been requested to stop */
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LISTENER_TERMINATED, /**< The listener thread terminated normally */
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LISTENER_FAILED /**< The listener thread terminated abnormally */
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};
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/**
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* CTouchscreen state data
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*/
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NXWidgets::CNxServer *m_server; /**< The current NX server */
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int m_touchFd; /**< File descriptor of the opened touchscreen device */
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sem_t m_waitSem; /**< Semaphore the supports waits for touchscreen data */
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pthread_t m_thread; /**< The listener thread ID */
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volatile enum EListenerState m_state; /**< The state of the listener thread */
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volatile bool m_enabled; /**< True: Normal touchscreen processing */
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volatile bool m_capture; /**< True: There is a thread waiting for raw touch data */
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volatile bool m_calibrated; /**< True: If have calibration data */
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struct nxgl_size_s m_windowSize; /**< The size of the physical display */
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struct SCalibrationData m_calibData; /**< Calibration data */
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struct touch_sample_s m_sample; /**< In normal mode, touch data is collected here */
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struct touch_sample_s *m_touch; /**< Points to the current touch data buffer */
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/**
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* The touchscreen listener thread. This is the entry point of a thread that
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* listeners for and dispatches touchscreens events to the NX server.
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*
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* @param arg. The CTouchscreen 'this' pointer cast to a void*.
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* @return This function normally does not return but may return NULL on
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* error conditions.
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*/
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static FAR void *listener(FAR void *arg);
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/**
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* Inject touchscreen data into NX as mouse input
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*
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* @param sample. The buffer where data was collected.
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*/
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void handleMouseInput(struct touch_sample_s *sample);
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public:
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/**
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* CTouchscreen Constructor
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*
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* @param server. An instance of the NX server. This will be needed for
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* injecting mouse data.
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* @param windowSize. The size of the physical window in pixels. This
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* is needed for touchscreen scaling.
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*/
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CTouchscreen(NXWidgets::CNxServer *server, struct nxgl_size_s *windowSize);
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/**
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* CTouchscreen Destructor
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*/
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~CTouchscreen(void);
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/**
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* Start the touchscreen listener thread.
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*
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* @return True if the touchscreen listener thread was correctly started.
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*/
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bool start(void);
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/**
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* Enable/disable touchscreen data processing. When enabled, touchscreen events
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* are calibrated and forwarded to the NX layer which dispatches the touchscreen
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* events in window-relative positions to the correct NX window.
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*
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* When disabled, touchscreen data is not forwarded to NX, but is instead captured
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* and made available for touchscreen calibration. The touchscreen driver is
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* initially disabled and must be specifically enabled be begin normal processing.
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* Normal processing also requires calibration data (see method setCalibrationData)
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*
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* @param capture. True enables capture mode; false disables.
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*/
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inline void setEnabled(bool enable)
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{
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// Set the capture flag. m_calibrated must also be set to get to normal
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// mode where touchscreen data is forwarded to NX.
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m_enabled = enable;
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}
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/**
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* Is the touchscreen calibrated?
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*
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* @return True if the touchscreen has been calibrated.
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*/
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inline bool isCalibrated(void) const
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{
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return m_calibrated;
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}
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/**
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* Provide touchscreen calibration data. If calibration data is received (and
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* the touchscreen is enabled), then received touchscreen data will be scaled
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* using the calibration data and forward to the NX layer which dispatches the
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* touchscreen events in window-relative positions to the correct NX window.
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*
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* @param caldata. A reference to the touchscreen data.
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*/
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void setCalibrationData(const struct SCalibrationData &caldata);
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/**
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* Recover the calibration data so that it can be saved to non-volatile storage.
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*
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* @param data. A reference to the touchscreen data.
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* @return True if calibration data was successfully returned.
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*/
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inline bool getCalibrationData(struct SCalibrationData &caldata) const
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{
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if (m_calibrated)
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{
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caldata = m_calibData;
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}
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return m_calibrated;
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}
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/**
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* Capture raw driver data. This method will capture mode one raw touchscreen
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* input. The normal use of this method is for touchscreen calibration.
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*
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* This function is not re-entrant: There may be only one thread waiting for
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* raw touchscreen data.
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*
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* @return True if the raw touchscreen data was sucessfully obtained
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*/
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bool waitRawTouchData(struct touch_sample_s *touch);
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};
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}
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#endif // __APPS_INCLUDE_GRAPHICS_NXWM_CTOUCHSCREEN_HXX
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